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ef79bbde P |
1 | /* Load needed message catalogs.\r |
2 | Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.\r | |
3 | \r | |
4 | This program is free software; you can redistribute it and/or modify\r | |
5 | it under the terms of the GNU General Public License as published by\r | |
6 | the Free Software Foundation; either version 2, or (at your option)\r | |
7 | any later version.\r | |
8 | \r | |
9 | This program is distributed in the hope that it will be useful,\r | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of\r | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r | |
12 | GNU General Public License for more details.\r | |
13 | \r | |
14 | You should have received a copy of the GNU General Public License\r | |
15 | along with this program; if not, write to the Free Software Foundation,\r | |
16 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. */\r | |
17 | \r | |
18 | #include "intlconfig.h"\r | |
19 | \r | |
20 | #include <fcntl.h>\r | |
21 | #include <sys/types.h>\r | |
22 | #include <sys/stat.h>\r | |
23 | \r | |
24 | #if defined STDC_HEADERS || defined _LIBC\r | |
25 | # include <stdlib.h>\r | |
26 | #endif\r | |
27 | \r | |
28 | #if defined HAVE_UNISTD_H || defined _LIBC\r | |
29 | # include <unistd.h>\r | |
30 | #endif\r | |
31 | \r | |
32 | #if (defined HAVE_MMAP && defined HAVE_MUNMAP) || defined _LIBC\r | |
33 | # include <sys/mman.h>\r | |
34 | #endif\r | |
35 | \r | |
36 | #ifdef _WIN32\r | |
37 | #include <io.h>\r | |
38 | #ifdef _MSC_VER\r | |
39 | #pragma warning (disable:4018)\r | |
40 | #endif\r | |
41 | #endif\r | |
42 | \r | |
43 | #include "gettext.h"\r | |
44 | #include "gettextP.h"\r | |
45 | \r | |
46 | /* @@ end of prolog @@ */\r | |
47 | \r | |
48 | #ifdef _LIBC\r | |
49 | /* Rename the non ISO C functions. This is required by the standard\r | |
50 | because some ISO C functions will require linking with this object\r | |
51 | file and the name space must not be polluted. */\r | |
52 | # define open __open\r | |
53 | # define close __close\r | |
54 | # define read __read\r | |
55 | # define mmap __mmap\r | |
56 | # define munmap __munmap\r | |
57 | #endif\r | |
58 | \r | |
59 | /* We need a sign, whether a new catalog was loaded, which can be associated\r | |
60 | with all translations. This is important if the translations are\r | |
61 | cached by one of GCC's features. */\r | |
62 | int _nl_msg_cat_cntr = 0;\r | |
63 | \r | |
64 | \r | |
65 | /* Load the message catalogs specified by FILENAME. If it is no valid\r | |
66 | message catalog do nothing. */\r | |
67 | void\r | |
68 | internal_function\r | |
69 | _nl_load_domain (domain_file)\r | |
70 | struct loaded_l10nfile *domain_file;\r | |
71 | {\r | |
72 | int fd;\r | |
73 | size_t size;\r | |
74 | struct stat st;\r | |
75 | struct mo_file_header *data = (struct mo_file_header *) -1;\r | |
76 | #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \\r | |
77 | || defined _LIBC\r | |
78 | int use_mmap = 0;\r | |
79 | #endif\r | |
80 | struct loaded_domain *domain;\r | |
81 | \r | |
82 | domain_file->decided = 1;\r | |
83 | domain_file->data = NULL;\r | |
84 | \r | |
85 | /* If the record does not represent a valid locale the FILENAME\r | |
86 | might be NULL. This can happen when according to the given\r | |
87 | specification the locale file name is different for XPG and CEN\r | |
88 | syntax. */\r | |
89 | if (domain_file->filename == NULL)\r | |
90 | return;\r | |
91 | \r | |
92 | /* Try to open the addressed file. */\r | |
93 | fd = open (domain_file->filename, O_RDONLY | O_BINARY); /*FRANCO - binary*/\r | |
94 | if (fd == -1)\r | |
95 | return;\r | |
96 | \r | |
97 | /* We must know about the size of the file. */\r | |
98 | if (fstat (fd, &st) != 0\r | |
99 | || (size = (size_t) st.st_size) != st.st_size\r | |
100 | || size < sizeof (struct mo_file_header))\r | |
101 | {\r | |
102 | /* Something went wrong. */\r | |
103 | close (fd);\r | |
104 | return;\r | |
105 | }\r | |
106 | \r | |
107 | #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \\r | |
108 | || defined _LIBC\r | |
109 | /* Now we are ready to load the file. If mmap() is available we try\r | |
110 | this first. If not available or it failed we try to load it. */\r | |
111 | data = (struct mo_file_header *) mmap (NULL, size, PROT_READ,\r | |
112 | MAP_PRIVATE, fd, 0);\r | |
113 | \r | |
114 | if (data != (struct mo_file_header *) -1)\r | |
115 | {\r | |
116 | /* mmap() call was successful. */\r | |
117 | close (fd);\r | |
118 | use_mmap = 1;\r | |
119 | }\r | |
120 | #endif\r | |
121 | \r | |
122 | /* If the data is not yet available (i.e. mmap'ed) we try to load\r | |
123 | it manually. */\r | |
124 | if (data == (struct mo_file_header *) -1)\r | |
125 | {\r | |
126 | size_t to_read;\r | |
127 | char *read_ptr;\r | |
128 | \r | |
129 | data = (struct mo_file_header *) malloc (size);\r | |
130 | if (data == NULL)\r | |
131 | return;\r | |
132 | \r | |
133 | to_read = size;\r | |
134 | read_ptr = (char *) data;\r | |
135 | do\r | |
136 | {\r | |
137 | long int nb = (long int) read (fd, read_ptr, to_read);\r | |
138 | if (nb == -1)\r | |
139 | {\r | |
140 | close (fd);\r | |
141 | return;\r | |
142 | }\r | |
143 | \r | |
144 | read_ptr += nb;\r | |
145 | to_read -= nb;\r | |
146 | }\r | |
147 | while (to_read > 0);\r | |
148 | \r | |
149 | close (fd);\r | |
150 | }\r | |
151 | \r | |
152 | /* Using the magic number we can test whether it really is a message\r | |
153 | catalog file. */\r | |
154 | if (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED)\r | |
155 | {\r | |
156 | /* The magic number is wrong: not a message catalog file. */\r | |
157 | #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \\r | |
158 | || defined _LIBC\r | |
159 | if (use_mmap)\r | |
160 | munmap ((caddr_t) data, size);\r | |
161 | else\r | |
162 | #endif\r | |
163 | free (data);\r | |
164 | return;\r | |
165 | }\r | |
166 | \r | |
167 | domain_file->data\r | |
168 | = (struct loaded_domain *) malloc (sizeof (struct loaded_domain));\r | |
169 | if (domain_file->data == NULL)\r | |
170 | return;\r | |
171 | \r | |
172 | domain = (struct loaded_domain *) domain_file->data;\r | |
173 | domain->data = (char *) data;\r | |
174 | #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \\r | |
175 | || defined _LIBC\r | |
176 | domain->use_mmap = use_mmap;\r | |
177 | #endif\r | |
178 | domain->mmap_size = size;\r | |
179 | domain->must_swap = data->magic != _MAGIC;\r | |
180 | \r | |
181 | /* Fill in the information about the available tables. */\r | |
182 | switch (W (domain->must_swap, data->revision))\r | |
183 | {\r | |
184 | case 0:\r | |
185 | domain->nstrings = W (domain->must_swap, data->nstrings);\r | |
186 | domain->orig_tab = (struct string_desc *)\r | |
187 | ((char *) data + W (domain->must_swap, data->orig_tab_offset));\r | |
188 | domain->trans_tab = (struct string_desc *)\r | |
189 | ((char *) data + W (domain->must_swap, data->trans_tab_offset));\r | |
190 | domain->hash_size = W (domain->must_swap, data->hash_tab_size);\r | |
191 | domain->hash_tab = (nls_uint32 *)\r | |
192 | ((char *) data + W (domain->must_swap, data->hash_tab_offset));\r | |
193 | break;\r | |
194 | default:\r | |
195 | /* This is an illegal revision. */\r | |
196 | #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \\r | |
197 | || defined _LIBC\r | |
198 | if (use_mmap)\r | |
199 | munmap ((caddr_t) data, size);\r | |
200 | else\r | |
201 | #endif\r | |
202 | free (data);\r | |
203 | free (domain);\r | |
204 | domain_file->data = NULL;\r | |
205 | return;\r | |
206 | }\r | |
207 | \r | |
208 | /* Show that one domain is changed. This might make some cached\r | |
209 | translations invalid. */\r | |
210 | ++_nl_msg_cat_cntr;\r | |
211 | }\r | |
212 | \r | |
213 | \r | |
214 | #ifdef _LIBC\r | |
215 | void\r | |
216 | internal_function\r | |
217 | _nl_unload_domain (domain)\r | |
218 | struct loaded_domain *domain;\r | |
219 | {\r | |
220 | if (domain->use_mmap)\r | |
221 | munmap ((caddr_t) domain->data, domain->mmap_size);\r | |
222 | else\r | |
223 | free ((void *) domain->data);\r | |
224 | \r | |
225 | free (domain);\r | |
226 | }\r | |
227 | #endif\r |